US Patent: 211,825
|
| Improvement in Apparatus for Describing Circles
|
|
Patentee:
|
|
| Thomas P. Worthington (exact or similar names) - Blackpool, England |
| Manufacturer: |
| Not known to have been produced |
|
|
Patent Dates:
|
| Applied: |
Oct. 05, 1878 |
| Granted: |
Jan. 28, 1879 |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Ralph Brendler
|
|
Description: |
| This is a clever design for a compass which can draw arcs and circles without referencing a center point. It is claimed to be particularly useful for descibing very large arcs, as would be used in architectural applications. |
|
